With lyrics like "Call it magic/ Cut me into two/ And with all your magic/ I disappear from view/ And I can't get over/ Can't get over you," it seems as if some of the struggles the couple were having before their official split were surfacing for the singer.

Bruce Springsteen married Julianne Phillips just six months after they met, but merely five months later, their union showed signs of stress. His lyrics in "Brilliant Disguise" – "So tell me what I see/ When I look in your eyes/ Is that you baby/ Or just a brilliant disguise?" may have been a harbinger of the honeymoon's end. During Springsteen's Tunnel of Love tour, the Boss and band mate Patti Scialfa got cozy; the pair later married in 1991. (His divorce from Phillips was finalized in 1988.)

Swift has made millions writing about heartbreak and love, though she has not officially confirmed which of her songs are about which of her relationships. From "Dear John" (thought to be about a brief relationship with John Mayer) to "Better than Revenge" (purported to be about Joe Jonas), Swift has sung her heart out as fans try to guess which guy inspired the lyrics. Additional suspects include Jake Gyllenhaal, Harry Styles and Conor Kennedy. "Back to December" is thought to be about her relationship with Taylor Lautner, whom she was rumored to have dated back in December of 2009.